The 9.SOLUTIONS Handlebar Kit for GoPro allows you to attach your GoPro to bicycle/motorcycle handlebars and roll bars measuring 1.02 to 1.18" in diameter. The kit includes a handlebar mount that utilizes the 9.SOLUTIONS Quick Mount Receiver interface. For attaching your GoPro, a 3-prong GoPro Quick Mount is included. The handlebar mount fastens to bars via two Allen screws, which can be tightened using the included Multi-Tool for GoPro or any 3/16" Allen wrench. The Multi-Tool also functions as a wrench for GoPro thumbscrews and can even be used as a bottle opener.